Is it true that everyone must at least have

[Mday]

my parents say i never had it. i don't remember ever having it.

i remember that when my older sister (by 1 year 10 months) had it, i was sitting next to her... i think she was around 5 or 6 at the time.

i am thinking that i got the antibodies via a blood transfusion as i had many operations by the time i was a toddler...

i am twenty now.